Air-exhauster for steam-radiators



M. E. HERSHEY.

AIR EXHAUSTER FOR STEAM RADIATORS.

l APPLICATION `FILED MAY 15, 1918.

1,352,265. Patentedsept. 7,1920.

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lllllllllllllnl UNITED STATES*v MARTIN E. HEBSHEY, OF ARLINGTON,' JERSEY.

AIRfnxHAUsTER lnon. 'STEAM-Enviarme.

Application led May 15, 1918. y Serial No. 234,628,

To all 1li/tom t may concern.'

Be it known that I, MARTIN E. IIEnsHnY, of Arlington, in the county of Hudson, in the State of New Jersey, have invented certain new and useful Improvements in Air- EXhaust-ers for Steam-Radiators, of which the following is a specification.`

This invention is a device, manipulated either by hand or power, that induces a quick circulation of the steam through the radiator to which it is locally attached, by ejecting the air that retards circulation in that specific radiator and its immediate connections, creating a line of least resistance and the consequent flow of steam to any radiator located within the iield of its influence, thereby establishing an effective heat control; thus it is lpossible to divert the first flow of steam to the connections to which their radiator is attached, or to any other radiator having preference.

It is a common experience in the operation of steam heating plants, that certain radiators at times remain perversely ineffective; at other periods the same radiators are efficient but others in the system become abortive. This condition is more especially emphasized in the residence or other small heating plant, and where preferably av low steam or vapor pressure is to be maintained,

. and the personal attendance to its operaton is limited and intermittent. It is underl the above conditions that this invention is particularly useful, and I do hereby declare the following to be a clear and eXact description of the same, referencel being had to the accompanying drawings, forming a part of this specification, and to the figures and letters of reference marked thereon.

In the drawings- Figure 1 is a side view of a radiator with my attachment secured thereto.

Fig. 2 is a longitudinal sectional view of the eXhauster.

Fig. 3 is atop view thereof.

Referring to the drawings, a, denotes the radiator, and Z), the eXhauster. The eX- hauster vcomprises a cylindrical barrel or cylinder 1, within which is a piston 2, the piston rod having on its end a yoke 3, to the ends of which are secured stops 4, 4, which at their opposite ends Yare connected with the bifurcated ends 5, 5, ,of a lever 6, ful* crumed as at 7, 0n the post 8, mounted on the cylinder` As shown, a spring 9q is interposed between the head of the cylinder and the yoke in Order to hold the piston normally in its retracted position barring the inlet port 10, from the radiator. yIn* an end of the cylinder is secured an automatic 'air valve 15, having at its upper end a transverse wall 16, centrally perforated and pro- )specification of Letters Patent. Y Patented Senti?, 19,20.

vided with valve seats 17 ,18, at the top andY bottom of the perforation. I/Vithin the body of the valve is a thin, corrugated tube 20, of copper or other proper metal carrying at its topa valve 21, which cooperates with the valve seat 17, at the bottom of the aperture in the wall 16. The tube 20 is in the nature of a float free torise from the bottoni closure plug 0f the chamber. Within a casing 22, at the top of the body of the valve is a ball 23, of rubber or other proper material, which acts as a valve inconjunction with the upper valve seat 18V.

If the radiator is air-locked the operation by the lever 6, of the piston will cause the air to be sucked'out of the'radiator and expelled through the valve, the ball acting to prevent the ingress of air through the valve. T he spring 9 moving Vthe piston to leave the inlet port l() normally openpermits the hot steam to circulate in the exhauster and eX- pands the corrugated tube 20, so that the valve is closed to prevent the escape of steam into the room. If water accumulates in the exhauster the tube acts as a float to close the valve. The piston is formed ofl considerable length and may be grooved to provide a seal. The piston rod and its bearing are also made long to avoid the necessity of using packings.

Inaccordance with the provisions of the patent statutes I have described the Vprinciple of operation of my invention,'together with the structure which I now consider to represent the bestembodiment thereof; but I desire to have it understood that the structure here shown is only illustrative, and that the invention can be carried out by other means.

I claim as my invention 1. A pump having a cylinder adapted t be in open communication with a radiator or the like, a piston within said cylinder, means for operating the piston, a Vvalve connected with the cylinder, and a thin corrugated metallic tube carrying said valve and adapted to expand upon a rise of temperature within said cylinder to move said valve to its seat.

2. A pump having a cylinder adapted to be in open communication With a radiator or the like, a piston Within said cylinder,

means for operating the piston, an air valve barrel secured to said cylinder and in open communication therewith, a diaphragm transversely Within said barrel and centrally apertured andv provided With upper and lower valve seats at said aperture, a gravity actuated valve coperating with the upperl valve seat, and an expansible valve member cooperating With the lower valve seat.

3. A pump having acylinder adapted to be in open communication With a radiator or the likea piston Within said cylinder, means for operating the piston, a valve comnected with said cylinder, and a thin corrugated metal tube constituting a float carrying said valve and adapted to expand upon a rise of temperature Within said cylinder to move said valveto its seat.

t. A pump havinga cylinder with an inlet connected to a radiator or the like, a piston Within said cylindern means for automatically maintaining said piston in a position whereby said cylinder` is normally in open communication through said inlet with the radiator, a valve connected to said cylinder, and an automatically actuated valve member 'constituting a float and operated by a rise of temperature Within said cylinder for closing said valve. u

MARTIN E. HERSHEY. 

